Receiver for wireless communication.



Wa HARRSN.

RECEIVER FOR WIRELESS GGMMUNCATIN.

APPLICATION FILED IEB. 8,1904.

MM5. 1` mme@ Nw. 10, 1914.

llltlltllllt PATEN T OFFICE.

WALTON HARRISGN, OF BROOKLYN, NEW YORK.

nncnrvnn non wrnntnss communicanten.

arranca serially. Fig. 2 is a diagrammatic perspec-A tivfe View of theentire apparatus in action.

A number of posts l, are `arranged in straight rows, the generaldirection of each row being slightly askew relatively to the path ofLpropagation ol the Waves, so as to crossthe same at an angle, asindicated in ll*"ig.` 2. Upon each post is an insulator 5,

providedV with a seat 6, the several seats in each row being inalinement With eachother. The antennae, or Wave collectors, consistingof longitudinal metallic conductors of sinusoidal form, arel mounted inthe seats as shown.v Each antenna is provided at its ends with 'bindingposts 7, 7a. From `the binding post 7 of one antenna, a Wire 8 leads toa vvvave-responsive device', such as a vcoherer 9. A. Wire 1 isconne`cted with the Wire 8, and with a switch button 11. A similarswitch button 12 is in communication. with the coherer.

By moving the switch arm into engagement with the respective buttons,the coherer may .at Will be cut out of or into the battery circuit.`Flhe Wire 18 connects the battery with the binding post 7a of the lastantenna of the`series. The several antennae are joined together,preferably in series as shown, by

connecting Wires 19. 'l do not limit myself, however, 'to the serialarrangement, as the antennae may be connected in other Ways. The crestsot the' several electromagnetic warts are indicated at 20, 21', 22 and23. l".

preferably employ lllertazian'waves radiated 'from e, verticaloscillator 24, but for many purposes other electromagnetic Waves andelectr 1c radiations of divers other kinds may be employed successfully.

vllach antenna, because oi its 'sinusoidal conformity, may, 'forconvenience, be conf sidered as made up oit subdivisions Zi, d, disposedin dii-ferent directions, and integrally connected together in series.Since the general, length ofeach antenna is' aslrevv A switch arm 13 isconnected by a Wire 14 with 'a telephonie receiver 15,' from'vvhih aWire 16 leads to a battery 17.-'

Adirection of travel of the Waves.

relatively to the direction of propagation of the Waves (see Fig. 2),the curves ofthe antennae are a little more 'than `a Wavelength apart,measured from crest to crest in the general direction of the antenna, in

y I `Specication of Letters latent. i Patented N0V10 1914.

Application filed February, 1904. Serial No. 19,624 f order'to maintainthem exactly a wave-" lengthapart as measured in a direct'line from thetransmittlng station;

`My'` purpose in disposmg the antennae askewfrelatively to the directionof prepagation of the Waves is to enable each sub 'division of everyantenna to'be acted upon by a different part oi" each vsuccessive wave.

-s theconne'cting wires 1 9 areall end-on toward' thetransmittin'glstation, Vthey are not aliected materially by the Waves. An observerstanding at the oscillator 24, and looking toward the `battery ofantennae would apparently behold (aside from the questioner'distance),each antenna through- "out its entire length, and Would alsoseeeach subdivision or each antenna in*y the entire battery. He Wouldsee, in substance, a single antenna occupying a comparatively largefraction of the horizon. It Will be observed that, on account of theseveral antennae being disposed askew, no subdivision is in theelectrical shadow of any other subdivision. The several subdivisions maytherefore be regarded as s o many units eX- posed separately to waveaction, yet located half a Wave length apart in the general I find thatby this arrangement each unit or subdivision acts to its fullcapabilities, as if segregated, yet the telephonie receiver or otherindicator responds cumulatively to an extent commensurate with theeffect of a single unit'multiplied by the number of units in the entiresystem. When the YWaves arrive from a direction represented by thepositionotthe oscillator 24, and set up surgings in the units of thereceiving antennae, these surgings are in phase'with the Waves.`W'lie'n, however, the Waves arrive from any other direction than the oneindicated, the Waves arriving and the oscillations set 'up in the unitstend to develop phase di'erences,`q,nd discord is the result. Theybattery ol antenn as a Whole is therefore more sensitive to Wavesarriving from a certaindeinite direction than from other directions, andupon this account possesses a sort ot' selectivity. i

Having thus described'my invention, I

ilo

:laim as new and desire to secure by Letters Patent 1 1. A receiversystem for Wireless signal ing, comprising a. plurality of antenna,members, more than two in number, spaced apart by distances of half awave length, 4measured inv the direction of travel of the waves andconnected in series with each other with "respect to oscillation set upin said antenna members.

L). The combination, in a receiver system having a plurality ofsupports, more than two in number, and spaced apart, of a plu rality ofantenna members corresponding to the number of supports and connectedtogether in series with each other with respect Ato oscillations set upin said antenna members, the antennae being spaced apart in thedirection of travel of the waves, by distances of half a wave length.

3. The combination, in a. receiver system for'wireless signaling, of aplurality of antenna members, more than two in number, the severalantenna members being s aced apart,l in the direction of travel o thewaves, by distances of half a wave length, and being in series with eachother with respect to oscillations set up in them.

4. In a receiver system, the combination of a number of units arrangedin groups, the several groups bein vjoined together by wires radiatingoutwar on lines having the oscillator as a center, whereby they areprevented from interfering with the action of the units.

5. A receiving antenna comprising a number of receiving .units more thantwo in number, connected in series with each other and spaced apart in adirection 'crossing the path of travel of the waves, one of said unitsbeing spaced farther than another from the source of said waves of halfagwave i ngth.

6. A receiving'antenna comprising units, more than two -innumber,'spaced from a transmitting member byv distances dependby adistance lent upon the wave length, said units being also spaced apar ina'k general direction lateral to the gen'eral direction of trayel of thewaves, and being in series Iwith respect to electrical disturbances setup in them by the` energ of said waves.

7. receiving antenna comprising a number of aerial units in series witheachother with respect to electrica1 disturbances set up in theml bywave action, said units being spaced directly apart in a directionlateral to the path of travel of the waves by distances independent ofthe wave length, and spaced apart in the direction of travel of saidwaves by distances dependent upon the wave length. Y

8. A receiving antenna comprising a number of aerial units in s erieswith each other with respect to .electrical disturbances set up thereinby lwave action, said units bei spaced from each other, in a directionlatera to the path of travel of the waves one of said units being spacedfarther than another from the source of the waves by a distance ofexactly half a wave length.

' In wireless antennae, the combination of supports, and a single wiremounted upon said 'supports and bent to form loops, said loops extendingin a plane common to all of them.

10. In wireless antennae, a single wire bent sinuously into loops,` allof said loops being disposed in a single plane.

1l. In wireless antennae, a single Wire bent into loops, more than twoin number, said loops being disposed in a single plane. 12.- In wirelessantennae, a single wire formed into loops, all of said loops beinglocated in a common plane, and fixed supports connected with said wirefor preventing said loops from turning. l

13. In lwireless antennae, a single receiving wire bent sinuously ,intoloops, and means for supporting said loops in a fixed .plane disposedaskew relatively to the path 16. In wireless telegraph antennae, theVcombination of a plurality of'masts, and a single wire formed intrsloops extending horizontally and lying in a vertical plane between andsupported by said masts, substantially as described.

17. In wireless telegraph antennae, the combination of a plurality ofmasts; and a single continuous wire formed into' a lurality of loopsextending in a vertical p ane and supported by said masts, substantiallyas described.

18. In a system of transmission by electric waves, a terminal apparatuscomprising a series of two or more antenna units separated by a distanceequal to one wave length of the transmitted waves, and electricallyconnected together, a series of two or more antenna units separated byone wave length and arranged alternately with the antenna.

units `of the first series, and station apparaantenna units insulatefrom the earth en@ separated by one Wave engmh and arranged mtermedlateand aeeque. cilstanees from he 'antenne units of the rs; series, endstation tenne uns e350 nsueef from the "in, the. sald antenna umts bemglocated 1n 'the hue or' desed musmiseen and spaced apart substanteyequal te (me-half 'the lengih of 'the t-ensmtee'i waves, mui mesmemuteneeusfy exciting eeel sew s 0i el tenne unite with eeetreaescilenimle ef eppeste eign,

221. l-n e sysem ef t'zinsn'ieeen. by eee tric Waves, e te'mm eppem-tuecompris ing antenna unite insulated .''em the earth, means ifmproducing; e eerie@ @if eemrie We'vee 'having i'heir pesj'veeelleantenne unite, neens fel' pre fas ef electme 'W/vee pela come@ i n@iis eppes with ahe ende el? eiten. m testlmony W

